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  1. #1
    New Member
    Join Date
    Nov 2009
    Eastern PA

    Default Differential Lock Inoperative on JD 4500

    I am the proud, original owner of a JD 4500 4WD, that I use primarily for snowplowing, mowing and pallet handling. Years ago I engaged the differential lock while moving slowly in snow. I was able to unlock the differential (I believe because I can use the brakes assist in steering). However, the lock pedal remains floored, and I cannot left it up. Would appreciate any ideas about what's going on and/or what I don't understand to get the lock operational again. I did do the depress on brake pedal and then the other thing - no change.


  2. #2
    Super Star Member
    Join Date
    Aug 2001
    Southern Wisconsin, USA
    JD_4x2_Gator, JD_4300, JD_X485, JD_425, JD_455, JD_110

    Default Re: Differential Lock Inoperative on JD 4500

    Has a search helped you find other threads discussing this lock? Not too long ago there was a thread and some pics, and seemed to involve a spring return. Also, may have wiped out the locking fingers and it is inoperable because of this.

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